Factors affecting the life of military power modules

Every electronic product has a certain service life, which is also affected by the product's raw materials, design, processing, environment, and operation.Military power moduleIt is composed of multiple electronic components. Some components may have a long service life. However, according to the barrel principle, the service life is determined by the short-lived components.

Factors affecting the life of military power modules

1. Electrolytic capacitor

Electrolytic capacitors are components that are more sensitive to temperature. It can even be said that the life of electrolytic capacitors is the life of the power supply, because the life of the circuit components is short. The main factors affecting the life of electrolytic capacitors are ambient temperature and ripple current. The heat caused by both will be manifested through temperature rise, so temperature rise is a factor that has a greater impact on the working life of electrolytic capacitors.

2. MOS tube

Such switching devices are in a high-speed switching state, so the heating caused by higher switching losses withstand voltage stress and current stress will also accelerate the aging of the device and will easily break down due to external high-temperature interference.

3. High frequency transformer

When high-frequency transformers are transmitting energy, internal losses will cause them to heat up, and the heat radiated will also affect the life of the transformer materials. Common transformer faults include insulation breakdown, winding burnout, and copper wire breakage.

4. Diode

The diode mainly bears voltage stress, current stress, reverse withstand voltage, forward withstand voltage, and the diode is also a heating device.

5. Multilayer ceramic capacitors

SMD ceramic capacitors are prone to problems in the solder joints, which will crack due to some stress. In order to avoid this, it is recommended to avoid using multiple ceramic capacitors in parallel.

These are the factors that affect the service life of military power modules.